In his famous classical conditioning experiment, Ivan Pavlov proved that it’s physically impossible for a Russian scientist's mouth not to water when it says the word “submarine.” Moisten your own sandwich receptacle with today’s Groupon: for $7, you get $14 worth of sub sandwiches and drinks at Lenny's Sub Shop in Overland Park. Choose between the following Lenny's locations: West 87th Street or West 135th Street.

Mouths in 19 states make their way to Lenny's for premium, sliced-to-order deli meats, made-from-scratch chicken salad and tuna salad, signature hot-pepper relish, and hearty, heroic portions. The regular-sized club sub measures 7.5 inches long and carries about half a pound of meat and cheese upon its fresh-baked bun ($6.35), while its larger, lengthier sibling stretches for 15 inches, packed with about a pound of protein and veggie vitamins ($10.55). After running up the steps of the Philadelphia Museum of Art, the hot Philly cheesesteak victoriously waves its melty, meaty arms in the air. Wash down these substantial sandwiches with a collection of bottled and fountain Coca-Cola libations ($1.05–$2.25), lemonade, or homemade iced tea, available in unsweetened, sweet, and charmingly congenial.